Apparatus for electrolysis of alkaline chlorids.



' UNITED sra'rns PATENT neuron.

KARL OCHS, OF BERLIN-GHARLOTTENBURG, GERMANY, ASSIGNOR TO SIEMENS & HALSKE, A. G., OF SIEMENSSTADT, NEAR BERLIN, GERMANY, A CORPORATION or GERMANY.

APPARATUS FOR ELECTROLYSIS OF ALKALINE CIlLORIDS.

Specification of Letters Patent.

Application filed November 13, 1914. Serial No. 872,051.

To all whom it may concern:

Be it known that I, KARL OCHS, a German citizen, residing at Berlin-Charlottenburg, Germany, have invented certain new and useful Improvements in Apparatus for Electrolysis of Alkaline Chlorids, of which the following is a specification.

This invention relates .to anew process for electrolytically obtaining alkaline' chlorids according to the' method using a hori- 1 zontal diaphragm and has for its principal hypochlorite' is almost prevented, for carrying'this method into effect, however, a considerable increase of voltage will be required.

By my present invention more particularly, a good layer formation in the liquid without employmg a layer of the above kind is attained by subdividing the liquid space above-the asbestos cloth into .a greatest possible number of small partitionsp This may for instance be accomplished byproviding above the filtering cloth parallel transverse walls inthe vat or container, said walls being of a material which resists the influence of chlorin and alkalies, such as glass, porcelain, clay, or an artificial mass made from cement and asbestos. These transverse walls may be fastened to, the container fori11 stance-by inserting the same into proper grooy'es provided'in the walls of the -con- F g ral i through an apparatus for electrolyziiig al-:

1 kaline 'chloridsby means of a horizontaldiaphragm comprising the above additional -transverse walls according to my invention,

i f 2 al plan View of said transverse walls igffi andliigs. 3, a and 5 represent the y-inisection vided within said transverse walls subdividing the liquid space of the container of the apparatus.

The transverse walls, which. are indicated Patented May 4, 1915. I

arrangement of further hollow bodies'proin the drawing by the letter a, rest upon the a asbestos cloth and cathode net 6, beneath the anode 0, and will prevent any motion in the liqui'd'within the container B and consequently prevent the chlorin from entering into the. lower layer abovethe diaphragm.

A further subdivision of the space containing the liquid of the apparatus is accomplished by hollow bodies d, as shown in Figs. 3,4 and 5. These bodies may have any desiredeross-section, for instance that of a hollow cylinder, andbesides forming partitionsin the liquid space will simultaneously serve to keep the transverse walls a, in i position. Fig. 4 shows an arrangement without transverse walls (1,- whereby hollow bodies d alone are employed in a regular or irregular disposition for forming partitions in the liquid space.

A subdivisionor partitioning of the liquid space may also be attained by employing non-rigid means in such a manner, for instance as shown in Fig. 5, cords or strings e of asbestos are provided upon the asbestos filter to form a plane net or a web with a plurality of layers. In the latter case the several layers are preferably displaced relatively to each other as indicated at F in Fig. 5. This net or web of asbestos may further be weighted by hollow bodies or transverse walls as desired.

It is to-be understood that by the term theneighborhood of the diaphragm is prevented. I

Having thus described my invention I claim as new and desire to secure by LettersPatent of the United-States:- Apparatus for the electrolysis of alkaline chloride comprising in combination a liquid container, suitable positive and negative electrodes above and below, a porous diareeeoo phragm extending across the space between motion of the liquid in the space adjacent said electrodes, and vertical partitions dis the diaphragm. 10 posed adjacent to'the 11 per surface of said In testimony whereof I affix my signature porous diaphragm an submerged in the in presence of two Witnesses.

liquid between the positive electrode and KARL OCHS. said porous diaphragm said partitions be- WVitnesses: ing of such height compared With their dis HENRY HAsPER,

tance from each other as to prevent bodily WOLDEMAR HAUPT. 

